Wrench.



C. G. GUERNSEY.

WRENCH.

APPLICATION FILED Nov.9.1o11.

1,061,609. Patented May 13, 1913.

UNITED STATES PATENT CFFICE.

CHARLES C. GUERNSEY, 0F LAWRENCE, MASSACHUSETTS, ASSIGNOR OF ONE-HALF T0 FRANK 0. LIBBEY, OF LAWRENCE, MASSACHUSETTS.

WRENCH.

Specification of Letters Patent.

Patented May 13, 1913.

Application led November 9, 1911. Serial N o. 659,370.

`of which the following is a specification.

This invention relates to wrenches and more particularly to wrenches of the rigid jaw type. l

The primary object of the invention is to` provide a wrench or Spanner, of simple and durable construction by means of which nuts may be turned on or 0H' the threaded ends of bolts and the like` without removing the tool froni the nut during the adjustment` thereof and without the employment of a4 ratchet wrench.

A further object of the invention is to provide a wrench or spanner'including a shank having a nut receivin socket opening though t e adjacent end t ereof to form (zo-acting work engaging jaws, one of which is provided with a lateral stop lip or projection, Vthe distance between the jaws being less than the diameter of the socket so that when the lip is in engagement with the nut, the latter may be turned to the right or left and when said nut registers with the socket, the wrench may be rotated or partially rotated to secure a fresh grip on said nut.

A still further object of the invent-ion is generally to improve this class of devices so as to increase their utility, durability and efliciency, as well as to reduce the cost of manufacture.

Further ob'ects and advantages will appear in the ollowing description, it being understood that various changes in form, proportions and minor details of construction may be resorted to within the scope of the appended claim.

For a :full understanding of the invention `and the merits thereof, reference is to be had to the following description and accompanying drawing, in which:

Figure 1 is a side elevation of a wrench or Spanner constructed in accordance lwith the present invention; Fig. 2 is an edge view of the same; Fig. 3 is a side elevation, showing in full lines, the lnut grasped hetween the jaws and in dotted lines, the 1position assumed by the wrench when the atter is moved upwardly in the act of turning the nut on a threaded bolt or other support; Fig. 4 is a similar View, showing in full lines, the nut within the socket preparatory to returning the wrench to normal position, and in dotted lines, the wrench head in position to engage the nut preparatory to obtaining a fresh grasp thereon; Fig. 5 is a transverse sectional view taken on the line 5--5 of Fig. 1, and looking in the direction of the arrow.

Corresponding and like parts are referred to in the following description and indicated in all fthe views of the drawing by the same reference characters.

The improved wrench forming the subject matter of the present invention is preferably stamped, cast or otherwise formed from a single piece ofvmetal and comprises a shank or hand grip 5 having its ends enlarged and thickened to form terminal heads 6, the side `walls of the shank 5 being preferably provided with shallow depressions 7 to assist the operator in firmly grasping the tool when using the latter. Each head 6 is provided with a substantially circular nut receiving socket 8 opening through the adjacent end of the jaw to form co-acting work engaging jaws 9, the distance between said jaws heilig less than the diameter of the socket so that when `the socket registers with the nut, the wrench may be rotated or partially rotated on the nut to obtain a fresh grip thereon. One of the jaws of each head is preferably cut-away at 10 to forma stop lip or projection 11 adapted to bear against the adjacent wall of the nut 12 and thus pre- Vent the, wrench from slipping off of the nut when turning said nut off or on the threaded end of a bolt or the like. The inner faces of the lips-11 are preferably inclined or beveled at 12' to conform to the shape of the walls of the nut, which, in the present instance, is shown hexagonal in shape, but it will of course be understood that the face 12 may be straight or arranged at substantially right angles to the wall of the recess 10 for engagement withA rectangular nuts, if desired. It will here be noted that the faces of the jaws 9 are disposed at a slight angle or inclination with respect to the shank 5, the inner face of one of said' 'aws forming in effect a continuation of he circular wall of the adjacent socket, so as not .to offer any obstruc-l tion when the wrench is adjusted on the nut in the act of obtaining a fresh grip on 11 the latter. One of the heads 6 is preferably larger than the other so as to'permit the Wrenchvto be used for adjustingnutsof .dif ferent sizes. l

' In .using the` deifice, the wrench is posi tioned overa. nut with the latter seated in the socket 8, after which the Wrench is a'djusted Aon the/nut. until the lip 11' bears' against the`adjacent face of the nut, When ,by rotating or'partially rotating the Wrench, saidn'ut-mfaybe turned on or "oi' the bolt.

After a partial vrotation has b`een-imparted to the nut, the Wrench is adjusted longitudinally of the4 nut until saidvnutpregisters with the socket, when byV partially rotating the `Wrench and. subsequently moving saidl Wrench so asvto cause the lip" 11 toQengage' the nut, a fresh 'grip may be h ad`on the latteig thus causing the tooll to act in .thev

samermanner as an ordinary ratchet Wrench.

The lips 1l onthe heads Gare preferably extended in opposite directions so that when the `tool'is reversed, said lips Will always be inY position to engage a nut.

It Will of course be understood that the Wrenches may be made in different sizes and shapes and nickeled, japanned or otherwise coated to give the Wrenches a neat, attracallel With said tangential face, the inner-V ends of both faces being Iin the circumferf ence of the socket and the outer end of one face being extendedv angularly toward the other face.

' In ,testimony whereof I aiiX my signature inlp'resenceof two Witnesses. v CHARLES C. GUERNSEY.

. llVitnesses:r

. CHARLES H. LITTLEFIELD, I MORRIS BARKER. 

